Method _validate_index

IPython/lib/demo.py:343–345

(self,index)

        self.block_index = 0

    def _validate_index(self,index):
        if index<0 or index>=self.nblocks:
            raise ValueError('invalid block index %s' % index)

    def _get_index(self,index):
        """Get the current block index, validating and checking status.